diff -ru hunspell/src/hunspell/csutil.cxx build/hunspell/src/hunspell/csutil.cxx
--- hunspell/src/hunspell/csutil.cxx	2011-02-02 11:35:43.000000000 +0100
+++ build/hunspell/src/hunspell/csutil.cxx	2014-04-24 19:42:01.373285409 +0200
@@ -17,6 +17,11 @@
   unsigned short clower;
 };
 
+#ifdef _WIN32
+#include <windows.h>
+#include <wchar.h>
+#endif
+
 #ifdef OPENOFFICEORG
 #  include <unicode/uchar.h>
 #else
@@ -51,6 +51,26 @@
 static struct unicode_info2 * utf_tbl = NULL;
 static int utf_tbl_count = 0; // utf_tbl can be used by multiple Hunspell instances
 
+FILE * myfopen(const char * path, const char * mode) {
+#ifdef _WIN32
+#define WIN32_LONG_PATH_PREFIX "\\\\?\\"
+    if (strncmp(path, WIN32_LONG_PATH_PREFIX, 4) == 0) {
+        int len = MultiByteToWideChar(CP_UTF8, 0, path, -1, NULL, 0);
+        wchar_t *buff = (wchar_t *) malloc(len * sizeof(wchar_t));
+        wchar_t *buff2 = (wchar_t *) malloc(len * sizeof(wchar_t));
+        FILE * f = NULL;
+        MultiByteToWideChar(CP_UTF8, 0, path, -1, buff, len);
+        if (_wfullpath( buff2, buff, len ) != NULL) {
+          f = _wfopen(buff2, (strcmp(mode, "r") == 0) ? L"r" : L"rb");
+        }
+        free(buff);
+        free(buff2);
+        return f;
+    }
+#endif
+    return fopen(path, mode);
+}
+
 /* only UTF-16 (BMP) implementation */
 char * u16_u8(char * dest, int size, const w_char * src, int srclen) {
     signed char * u8 = (signed char *)dest;
diff -ru hunspell/src/hunspell/csutil.hxx build/hunspell/src/hunspell/csutil.hxx
--- hunspell/src/hunspell/csutil.hxx	2010-09-06 09:58:53.000000000 +0200
+++ build/hunspell/src/hunspell/csutil.hxx	2014-04-24 19:42:01.373285409 +0200
@@ -52,6 +52,9 @@
 #define FORBIDDENWORD  65510
 #define ONLYUPCASEFLAG 65511
 
+// fopen or optional _wfopen to fix long pathname problem of WIN32
+LIBHUNSPELL_DLL_EXPORTED FILE * myfopen(const char * path, const char * mode);
+
 // convert UTF-16 characters to UTF-8
 LIBHUNSPELL_DLL_EXPORTED char * u16_u8(char * dest, int size, const w_char * src, int srclen);
 
diff -ru hunspell/src/hunspell/dictmgr.cxx build/hunspell/src/hunspell/dictmgr.cxx
--- hunspell/src/hunspell/dictmgr.cxx	2010-06-02 21:33:59.000000000 +0200
+++ build/hunspell/src/hunspell/dictmgr.cxx	2014-04-24 19:42:01.381285408 +0200
@@ -5,6 +5,7 @@
 #include <stdio.h>
 
 #include "dictmgr.hxx"
+#include "csutil.hxx"
 
 DictMgr::DictMgr(const char * dictpath, const char * etype) : numdict(0)
 {
@@ -57,7 +58,7 @@
 
     // open the dictionary list file
     FILE * dictlst;
-    dictlst = fopen(dictpath,"r");
+    dictlst = myfopen(dictpath,"r");
     if (!dictlst) {
       return 1;
     }
diff -ru hunspell/src/hunspell/filemgr.cxx build/hunspell/src/hunspell/filemgr.cxx
--- hunspell/src/hunspell/filemgr.cxx	2010-04-14 11:42:03.000000000 +0200
+++ build/hunspell/src/hunspell/filemgr.cxx	2014-04-25 00:44:05.049789586 +0200
@@ -6,6 +6,7 @@
 #include <stdio.h>
 
 #include "filemgr.hxx"
+#include "csutil.hxx"
 
 int FileMgr::fail(const char * err, const char * par) {
     fprintf(stderr, err, par);
@@ -15,7 +16,7 @@
 FileMgr::FileMgr(const char * file, const char * key) {
     linenum = 0;
     hin = NULL;
-    fin = fopen(file, "r");
+    fin = myfopen(file, "r");
     if (!fin) {
         // check hzipped file
         char * st = (char *) malloc(strlen(file) + strlen(HZIP_EXTENSION) + 1);
diff -ru hunspell/src/hunspell/hunzip.cxx build/hunspell/src/hunspell/hunzip.cxx
--- hunspell/src/hunspell/hunzip.cxx	2010-04-27 16:07:14.000000000 +0200
+++ build/hunspell/src/hunspell/hunzip.cxx	2014-04-24 19:42:01.381285408 +0200
@@ -3,6 +3,7 @@
 #include <stdio.h> 
 
 #include "hunzip.hxx"
+#include "csutil.hxx"
 
 #define CODELEN  65536
 #define BASEBITREC 5000
@@ -38,7 +38,7 @@
 
     if (!filename) return -1;
 
-    fin = fopen(filename, "rb");
+    fin = myfopen(filename, "rb");
     if (!fin) return -1;
 
     // read magic number